IL6 and COVID-19: In the severe COVID-19 group we observed high positive correlation between the proportion of IL-10 level and neutrophils (r = 0.455, p = 0.0293), high negative correlation between proportion of IL-10 level and eosinophils (r = −0.515, p = 0.0118) and between proportion of IL-6 level and eosinophils (r = −0.475, p = 0.0219).